Reg-u-la-tion, trefniad, rheol
Reg-u-la-tor, trefnwr, cymmedrolydd
Re-im-burse-ment, atdaliad
Re-it-er-ate, ad-drethu, mynychu
Re-lax-a-tion, llacad; seibiant
Re-lax-a-tive, ymollyngol, llacäol
Re-mark-a-ble, nodadwy, hynod
Re-mov-a-ble, symmudadwy, mudadwy
Re-mu-ner-ate, gwobrwyo, atdalu
Ren-o-va-tion, adnewyddiad